{"product_id":"serta-iseries-nxg-mattress-3500-medium-foam-available-in-twin-xl-full-queen-king-and-cal-king-sizes-copy","title":"Serta iSeries NXG Mattress 4500 Ultra Plush Foam ~ Available in Twin XL, Full, Queen, King and Cal King Sizes","description":"\u003cstyle\u003e\n.accordion-container{max-width:1200px;margin:0 auto;font-family:Montserrat,sans-serif}\n.accordion-item{margin-bottom:15px;border:1px solid #e0e0e0;border-radius:8px;overflow:hidden;background:#fff}\n.accordion-header{background:#fff;color:#000;padding:18px 24px;cursor:pointer;font-size:18px;font-weight:600;display:flex;justify-content:space-between;align-items:center;transition:all .3s ease;border-bottom:1px solid #e0e0e0}\n.accordion-header:hover{background:#f8f8f8}\n.accordion-header::after{content:'+';font-size:24px;font-weight:300;transition:transform .3s ease}\n.accordion-header.active{background:#f5f5f5}\n.accordion-header.active::after{transform:rotate(45deg)}\n.accordion-content{max-height:0;overflow:hidden;transition:max-height .3s ease}\n.accordion-content.active{max-height:5000px}\n.content-inner{padding:24px;line-height:1.8;color:#333}\n.content-inner h3{color:#000;margin-top:24px;margin-bottom:12px;font-size:20px;font-weight:600}\n.content-inner p{margin-bottom:16px}\n.content-inner ul{margin:16px 0;padding-left:24px}\n.content-inner ul li{margin-bottom:8px}\n.specs-table{width:100%;border-collapse:collapse;margin:20px 0}\n.specs-table td{padding:12px;border-bottom:1px solid #e0e0e0}\n.specs-table td:first-child{font-weight:600;width:40%}\n.cta-box{background:transparent;color:#000;padding:30px;border:2px solid #000;border-radius:8px;margin-top:30px;text-align:center}\n.cta-box h3{color:#000;margin:0 0 10px;font-size:22px}\n.cta-box p{margin:0 0 15px;color:#000}\n.cta-box a{color:#000;text-decoration:underline;font-weight:600}\n\u003c\/style\u003e\n\n\u003cdiv class=\"accordion-container\"\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nSerta iSeries NXG 4500 Ultra Plush Foam Mattress\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eSerta iSeries NXG 4500 Ultra Plush Foam Mattress\u003c\/strong\u003e delivers immediate cooling, enhanced pressure relief, and cloud-like softness for deeper sleep. Features \u003cstrong\u003ehigh-density NXG Memory Foam\u003c\/strong\u003e for exceptional contouring and pressure relief with ultra plush feel. \u003cstrong\u003eCoolFeel Cover\u003c\/strong\u003e provides cool-to-touch surface while \u003cstrong\u003eCarbon Fiber Memory Foam\u003c\/strong\u003e draws heat away from body. \u003cstrong\u003eHigh-density foam core\u003c\/strong\u003e provides durable support surrounded by \u003cstrong\u003eUltimate Edge Support\u003c\/strong\u003e for edge-to-edge stability. All-foam construction delivers superior motion isolation. \u003cstrong\u003eIdeal for side sleepers\u003c\/strong\u003e who prefer maximum cushioning. Available in Twin XL, Full, Queen, King, and Cal King sizes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nSpecifications\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003ctable class=\"specs-table\"\u003e\n\u003ctr\u003e\n\u003ctd\u003eCollection\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSerta iSeries NXG 4500\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComfort Level\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUltra Plush\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMattress Type\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eAll-Foam (No Coils)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAvailable Sizes\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eTwin XL, Full, Queen, King, Cal King\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFoam Technology\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eNXG Memory Foam (High-Density)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling Layers\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCoolFeel Cover, Carbon Fiber Memory Foam\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupport System\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eHigh-Density Foam Core\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEdge Support\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eUltimate Edge Support\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMotion Control\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSuperior Partner Movement Isolation\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBest For\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSide Sleepers\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSerta\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nPressure Relief \u0026amp; Support\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003ch3\u003eNXG Memory Foam Technology\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003ehigh-density NXG Memory Foam\u003c\/strong\u003e provides exceptional contouring with ultra plush feel that cradles body in cloud-like softness. Enhanced foam layers create deep pressure relief at shoulders and hips where side sleepers need maximum cushioning, conforming to body shape while the all-foam construction offers consistent support throughout.\u003c\/p\u003e\n\n\u003ch3\u003eHigh-Density Foam Core\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003epremium foam core\u003c\/strong\u003e provides durable foundation that maintains proper spinal alignment beneath ultra plush layers. The all-foam construction offers consistent support and superior motion isolation compared to hybrid models. \u003cstrong\u003eUltimate Edge Support\u003c\/strong\u003e maintains stability from edge to edge, preventing roll-off and maximizing sleeping surface even with plush feel.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nCooling Technology\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eCoolFeel Cover\u003c\/strong\u003e provides cool-to-touch surface that delivers immediate cooling sensation when you lie down, helping you fall asleep faster. The fabric dissipates body heat for comfortable initial contact with plush mattress surface.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eCarbon Fiber Memory Foam layer\u003c\/strong\u003e actively draws heat away from body throughout the night. Carbon fiber's thermal conductivity pulls warmth from sleep surface and disperses it, preventing heat buildup that can occur with plush all-foam construction. This dual cooling approach maintains comfortable temperature even with deep contouring and maximum cushioning.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nCare Instructions\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003cp\u003eUse mattress protector to guard against stains. Rotate head-to-foot every three to six months for even wear. Avoid jumping or standing on mattress. Do not fold or bend. Allow new mattress to air out for 24-48 hours after unboxing.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"accordion-item\"\u003e\n\u003cdiv class=\"accordion-header\" onclick=\"toggleAccordion(this)\"\u003e\nFrequently Asked Questions\n\u003c\/div\u003e\n\u003cdiv class=\"accordion-content\"\u003e\n\u003cdiv class=\"content-inner\"\u003e\n\u003ch3\u003eWhat makes this ultra plush?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eUltra plush provides maximum softness\u003c\/strong\u003e with enhanced foam layers creating cloud-like feel that deeply cradles body. This is the softest all-foam option in the NXG line, offering exceptional cushioning for side sleepers who prefer sinking into mattress with deep pressure relief.\u003c\/p\u003e\n\n\u003ch3\u003eHow does all-foam differ from hybrid?\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eAll-foam offers superior motion isolation\u003c\/strong\u003e and consistent contouring without coils. While hybrid 4500 provides some bounce from coils, this all-foam version delivers pure memory foam feel with complete movement absorption. Ideal for light sleepers sensitive to partner movement who prefer classic memory foam experience.\u003c\/p\u003e\n\n\u003ch3\u003eWill all-foam feel too soft?\u003c\/h3\u003e\n\u003cp\u003eFor side sleepers, no. The \u003cstrong\u003efoam core prevents excessive sinking\u003c\/strong\u003e while plush layers provide cushioning. The all-foam construction balances soft surface with supportive foundation. You'll experience deep contouring and pressure relief while maintaining proper spinal alignment for comfortable side sleeping.\u003c\/p\u003e\n\n\u003ch3\u003eDoes all-foam sleep hot?\u003c\/h3\u003e\n\u003cp\u003eNot with cooling technology. The \u003cstrong\u003eCarbon Fiber Memory Foam and CoolFeel Cover\u003c\/strong\u003e actively dissipate heat to prevent warmth retention common in traditional all-foam mattresses. This dual cooling approach maintains comfortable temperature throughout the night despite plush all-foam construction.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cdiv class=\"cta-box\"\u003e\n\u003ch3\u003eGet 20% Off + Free Delivery\u003c\/h3\u003e\n\u003cp\u003eQuestions about this product? Our specialists are here to help.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"tel:8552233267\"\u003eCall\/Text: 855.223.3267\u003c\/a\u003e | \u003ca href=\"mailto:cs@casabelladecor.net\"\u003eEmail: cs@casabelladecor.net\u003c\/a\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\nfunction toggleAccordion(header) {\n  var content = header.nextElementSibling;\n  var isActive = header.classList.contains('active');\n  var allHeaders = document.querySelectorAll('.accordion-header');\n  var allContents = document.querySelectorAll('.accordion-content');\n  \n  for(var i = 0; i \u003c allHeaders.length; i++) {\n    allHeaders[i].classList.remove('active');\n  }\n  for(var i = 0; i \u003c allContents.length; i++) {\n    allContents[i].classList.remove('active');\n  }\n  \n  if(!isActive) {\n    header.classList.add('active');\n    content.classList.add('active');\n  }\n}\n\u003c\/script\u003e","brand":"Serta","offers":[{"title":"TWIN XL","offer_id":44912530358472,"sku":null,"price":2699.0,"currency_code":"USD","in_stock":true},{"title":"FULL","offer_id":44912530391240,"sku":null,"price":2849.0,"currency_code":"USD","in_stock":true},{"title":"QUEEN","offer_id":44912530424008,"sku":null,"price":2999.0,"currency_code":"USD","in_stock":true},{"title":"SPLIT HEAD QUEEN","offer_id":44912530456776,"sku":null,"price":3599.0,"currency_code":"USD","in_stock":true},{"title":"KING","offer_id":44912530489544,"sku":null,"price":3599.0,"currency_code":"USD","in_stock":true},{"title":"SPLIT HEAD KING","offer_id":44912530522312,"sku":null,"price":4199.0,"currency_code":"USD","in_stock":true},{"title":"CAL KING","offer_id":44912530555080,"sku":null,"price":3599.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8519\/3928\/files\/Serta_iSeries_NXG_4500_Ultra_Plush_Foam_Mattress_Side_Sleep.webp?v=1769359330","url":"https:\/\/casabelladecor.net\/products\/serta-iseries-nxg-mattress-3500-medium-foam-available-in-twin-xl-full-queen-king-and-cal-king-sizes-copy","provider":"casabelladecor.net","version":"1.0","type":"link"}